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CAS 63-42-3

:

(+)-Lactose

Description:
(+)-Lactose, also known as beta-lactose, is a disaccharide sugar composed of one molecule of glucose and one molecule of galactose linked by a β(1→4) glycosidic bond. It is commonly found in milk and dairy products, serving as a primary carbohydrate source in these foods. This compound is a white, crystalline solid that is soluble in water, exhibiting a slightly sweet taste. Lactose is classified as a reducing sugar due to its free aldehyde group, which can participate in redox reactions. It is important in various biochemical processes, including energy metabolism in certain organisms. In humans, lactose is broken down by the enzyme lactase into its constituent monosaccharides for absorption; however, some individuals may experience lactose intolerance due to insufficient lactase production. Additionally, lactose has applications in the food industry, pharmaceuticals, and as a prebiotic, promoting the growth of beneficial gut bacteria. Its molecular formula is C12H22O11, and it has a specific rotation of +52.5°, indicating its optical activity.
Formula:C12H22O11
InChI:InChI=1S/C12H22O11/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12/h1,4-12,14-21H,2-3H2/t4-,5+,6+,7+,8-,9-,10+,11+,12-/m0/s1
InChI key:InChIKey=DKXNBNKWCZZMJT-JVCRWLNRSA-N
SMILES:O([C@@H]([C@@H]([C@H](C=O)O)O)[C@@H](CO)O)[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O
Synonyms:
  • (+)-Lactose
  • (2R,3R,4S,5R,6S)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)tetrahydropyran-3-yl]oxy-tetrahydropyran-3,4,5-triol
  • 4-(beta-D-Galactosido)-D-glucose
  • 4-O-beta-D-Galactopyranosyl-D-glucose
  • 4-O-beta-D-galactopyranosyl-D-glucopyranose
  • 4-O-beta-D-galactopyranosyl-beta-D-glucopyranose
  • 4-O-β-<span class="text-smallcaps">D</smallcap>-Galactopyranosyl-<smallcap>D</span>-glucose
  • 4-O-β-D-Galactopyranosyl-D-glucose
  • <span class="text-smallcaps">D</smallcap>-Glucose, 4-O-β-<smallcap>D</span>-galactopyranosyl-
  • <span class="text-smallcaps">D</span>-(+)-Lactose
  • See more synonyms
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